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Either someone turned the water off to the 1-6 valves or the common wire is disconnected somewhere.
Go out to the valves and see if you can turn one on manually to verify the water is on. While you're there look for a loose common wire. It's usually the white wire but it could be anything. There's a good chance it's the same color as the wire hooked up to the common terminal on the controller.
Also look to see if the common wire came loose from the controller.